ASTROSAT CZTI

Data Quality Report

Orbit 37403

Creation date: 2024-06-27T21:39:33.669587
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_002T01_9000005322_37403cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37403cztM0_level2_quad_clean.evt
Size (bytes)514,310,40062,997,120
Size490.5 MB 60.1 MB
Events in quadrant A2,771,386396,529
Events in quadrant B2,699,280406,164
Events in quadrant C5,763,766378,328
Events in quadrant D3,996,631369,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113123
B0110882
C0205782
D0153992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102200.392003%
B5102551.078009%
C510254910.760486%
D51021593.116425%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7045 5103 12 12 0.17% 0.24%
B 7045 5103 32 32 0.45% 0.63%
C 7045 5103 464 464 6.59% 9.09%
D 7045 5103 143 143 2.03% 2.80%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 271650 2221.4 606 595 122.0
A 15 222 81412 662.33 606 595 122.0
A 13 248 31100 250.0 606 595 122.0
B 5 172 140391 1235.87 606 592 113.1
B 0 190 88342 775.74 606 592 113.1
B 0 229 35786 311.13 606 592 113.1
C 1 23 3078794 23606.03 573 579 130.4
C 15 214 210340 1608.6 573 579 130.4
C 0 10 125456 957.65 573 579 130.4
D 12 235 885531 6289.18 588 571 140.7
D 2 249 280113 1986.63 588 571 140.7
D 2 250 200680 1422.12 588 571 140.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter